With regards to your website, I too like the look of the site and it seems very easy to navigate, maybe add a roll-over colour to the left handside nav though. Not delved into your code so cannot comment although I don't see why it can't be W3C compliant as it seems pretty basic, you can sort the tables issue with CSS if you really wanted to.
Easy to navigate and it's clear and concise. I'm not too sure about the brown though. The blue sings too much for me. I think cream would be more subtle and work better with the brown. Nice touch with the drawing cursor!
Your work is excellent, you have a good range of quality work in your portfolio. Well done!